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Open pit mine in Val-d'Or, Quebec. The Abitibi gold belt is a region of Canada that extends from Wawa, Ontario to Val-d'Or, Quebec.Located within the mineral-rich Abitibi greenstone belt, the gold belt is an established gold mining district having produced over 100 mines, and 170 million ounces of gold since 1901.
The Southern province is a narrow region from Sault Ste. Marie to Kirkland Lake, is made of rocks dating 1.8 to 2.4 billion years ago. [1] The Hudson Bay lowlands, located north of the Canadian Shield, are mainly made of sedimentary rocks from the Silurian Period, although some parts date from the Ordovician and Devonian periods. [1]
The Canadian Shield is a collage of Archean plates and accreted juvenile arc terranes and sedimentary basins of the Proterozoic Eon that were progressively amalgamated during the interval 2.45–1.24 Ga, with the most substantial growth period occurring during the Trans-Hudson orogeny, between c. 1.90–1.80 Ga. [5] The Canadian Shield was the ...
The granitoid rocks are mainly potassic granite and were derived principally from reworked older (3.1–2.8 Ga) gneiss. [3] During the Paleoproterozoic, island-arc terrane associated with the Colorado orogeny accreted to the Wyoming Craton along the Cheyenne belt, a 500-km-wide belt of Proterozoic rocks named for Cheyenne, Wyoming.
The surrounding rock is approximately 600 million to 1 billion years old, while the Bugaboo intrusion dates to 135 million years ago. The igneous intrusion cooled slowly, forming the crystalline structure of the hard granite found today. [1]
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Gold has been the central element in the area's history going back to the 1858-1860 Fraser River Gold Rush.Miners rushed to the Cayoosh and Bridge River areas looking for placer deposits, One named Cadwallader looked for the outcroppings on the creek that is now named for him and turned out later to be the site of the richest hard-rock veins in the region.
The final major point in the Canadian gold mining timeline began in 1981 with the discovery of the Hemlo gold deposits in Northern and Northwestern Ontario. During this period, gold was also discovered across all Canadian provinces and territories and gold production from the 1990 to 1997 period averaged more than 150 tonnes a year.
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